Grate and fire-box for stoves



(No Model.)

J. LAWYER.

GRATE AND FIRE BOX FOR STOVES.

Patented June 24, 1890.

UNITED STATES PATENT OFFICE.

JUSTIN LAWYER, OF COLDW'ATER, MICHIGAN.

GRATE AND FIRE- BOX FOR STOVES.

SPECIFICATION forming part of Letters Patent No. 430,658, dated June 24,1890.

Application filed January 23, 1890- Serial No. 387,785. (No model.)

To all whom it may concern:

Be it known that LJUSTIN LAWYER, a citizen of the United States,residing at Goldwater, in the county of Branch and State of Michigan,have invented a new and useful Grate and Fire-Box for Stoves, of whichthe following is a specification.

This invention relates to grates and fireboxes for stoves and furnaces;and it has for its object to construct a device of this class whichshall be simple in construction and which may be easily operated tobreak and expel the clinkers and ashes.

\Nith these ends in View, the invention consists in the improvedconstruction and 00111- bination of parts, which will be hereinafterfully described, and particularly pointed out in the claims.

In the drawings hereto annexed, Figure 1 represents the perspective viewof the hearthplate of a stove or furnace equipped with my improvedgrate. Fig. 2 is a vertical transverse sectional view of the same. Fig.3 is a perspective detail view of a portion of the grate and theoperating-lever.

Like numerals-of reference indicate like parts in all the figures.

1 designates the hearth-plate or base-ring of a stove or furnace, whichmay be of any suitable construction, and is mounted upon the legs orsupports 2. The ring 1 is provided with downwardly-extending hangers 3,provided at their lower ends with flanges 4, and at their upper endswith shoulders 5. The flanges 4 serve to support the oscillating grate6, which is made of open-work cast-iron, and which is circular in shape,as shown, in order to enable it to be conveniently rocked or oscillatedupon its supportingflanges. The grate 6 has a central circular opening7, which is surrounded by a downwardly-ere tending annular flange 8.

9 designates an annular ring or casting, which forms the bottom of thefire-pot, and which is provided with an exterior annular flange orshoulder 10, by means of which it is supported upon the shoulders 5 ofthe hangers 3 in such a manner as to enable it to be oscillated whendesired. The said ring or casting 9 is provided with an annular seriesof fingers 11, extending downwardly to Within a short distance of theperiphery of the grate. The ring 9 is also provided with an inwardlyextending arm 12, which is slightly curved, as shown, and whichextends tangentially to the circular opening 7 in the grate. This arm,which may be designated as a followerarm, serves, when the ring 9 isrotated in the manner to be hereinafter described, to draw the contentsof the fire-box toward the center of the grate, where it will be morethoroughly consumed, thus avoiding the collection of ashes and deadeinders at the outer edge of the fire-box.

13 designates an operating lever or handle,

of the grate in such a manner as to enable it to be vibrated slightly inavertical direction. This lever or handle is confined in a bail 14depending from the grate.

15 designates a dog or pawl, which is 0011- nected pivotally to thelever or handle 13, and which is provided with a tooth 16, which, whenthe outer end of the lever or handle is raised, is adapted to enterbetween any two of the downwardly-extending teeth or fingers 11 latedconjointly with the grate 6. The tooth 16 is beveled on one side, asshown at- 17, so as to slip over the fingers 11 when the lever or handleis moved in one direction. This is to prevent clinkers and the like fromaccumulating in the acute angle between the ring 9 and itsinwardly-extending arm 12. The said ring is capable of being rotatedonly in the direction indicated by the arrow in Fig. 1 of the drawings,when the tendency of the arm 12 will be to sweep the contents of thefire-pot toward the central discharge-opening 7.

Suitably mounted upon the annular flange the grate, is a rectangularframe 18, having flanges 19, which form bearings for a slidingscreen-frame 20. The latter is provided-with a handle 21, by means ofwhich it may be conveniently reciprocated in its bearings. It will beseen that by reciprocating this screenframe the contents of the'fire-boxwill be effectually sifted, while by withdrawing the said screen-framefrom under the dischargeopening 7 the contents of the fire-pot may bedumped or discharged.

which is suitably attached to the under side 8, surrounding thedischarge-opening 7 of of the ring 9, which latter may thus be oscil-The operation and advantages of this invention will be so obvious fromthe foregoing description, taken in connection with the drawings heretoannexed, as to require no further detailed explanation. The constructionof the device is extremely simple, and it may be easily operated, and bymeans thereof clinkers and the like may be effectually broken up anddischarged into the ash-pit without the necessity of putting out thefire.

I desire it to be particularly understood that I do not limit myself tothe precise construction of details herein described, but reserve thelight to any modifications which may be resorted to without departingfrom the spirit of my invention.

Having thus described my invention, what I claim is 1. The combinationof a base or hearth plate having downwardly-extending hangers, with anoscillating grate and an independently-oscillating ring mounted upon thesaid hangers, substantially as set forth.

2. The combination of the base or hearth plate havingdownwardly-extending hangers, and the oscillating grate andindependentlyrotatable ring mounted upon said hangers, the said ringbeing provided with an inwardly-extending follower-arm, substantially asset forth. I

3. The combination, with the base or hearth plate having thesupporting-hangers, of the oscillating grate having a centraldischargeopening, and the independently-rotatable ring having theinwardly-extending followerarm tangential to said discharge-openin g,substantially as set forth.

4. The combination, with the base or hearth plate having thesupporting-hangers, of the oscillating grate having the centraldischargeopening, and the independentlyrotatable ring having aninwardly-extending followerarm tangential to said discharge-opening, andan annular series of downward-extendin g Vertieal fingers, and thevertically-vibrating 0perating-lever attached to the grate, and having apivoted dog or pawl provided with a beveled tooth to engage the fingersof the rotatable ring, substantially as set forth.

5. The combination of the base or hearth plate having thesupporting-hangers, the rotatable ring having the follower-arm and thedownwardly-extending fingers, the oscillating grate, thevertically-movable operating-lever attached to the grate and confined ina bail depending from the latter, and the dog or pawl pivoted to theoperating-lever and having a beveled tooth to engage the fingers of therotatable ring, substantially as set forth.

6. The combination of the base or hearth plate having thesupporting-hangers, tlie rotatable ring having theinwardly-extendingfolloWer-arm, the oscillating grate having the centraldischarge-opening surrounded by a downward-extendin g flange, the framemounted upon said flange and having a sliding screen or grate, and themeans for simultaneously oscillating the grate and rotating the ring,whereby the follower-arm of the latter shall operate to sweep thecontents of the fire-box out through the discharge-opening of the gratewhen the sliding screen is withdrawn, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in presence of two witnesses.

JUSTIN LAWYER.

Witnesses:

JAMES R. DIoKEY, ALANSON T. KINNEY.

